Jasic Cut 45 - Plasma Cutting Tips and Techniques; General Cutting Tips and Best Practices

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The below is just a few ps on how to get the best cut performance out of your Jasic plasma machine.
Before cung always check the torch, consumables and cables for excessive wear and tear. If the electrode, air distributor or the cung p ori-
ce shows signs of wear and tear then replace it with new consumables sized correctly for your Jasic plasma machine and applicaon your about
to undertake. Cung with worn-out consumables will only lead to poor cut quality.
Only use clean, dry compressed air (always ensure a air lter is installed), ensure you match the air pressure and air ow requirements to those
of your Jasic plasma machine. Adjust the gas pressure on the machine according to the owner’s manual.
Always set the air pressure when the air is owing through the torch, this will ensure that you have proper pressure and airow while cung.
For torch leads longer than 12m, it is common to increase the air pressure by approximately 10 PSI.
Always use the right p for your amperage seng. A lower amperage p has a smaller orice which maintains a narrow plasma stream at lower
sengs. Using a 40-amp p at an 80-amp seng will distort the p orice and will reduce consumable life. Using an 80-amp p on the lower
sengs will not focus the plasma stream as well and lead to a wider kerf.
Use extended ps to reach out further for cung in corners, using paerns or in ght areas.
It is generally best to start a cut from the edge of the plate, hold the torch at 90° to the edge of the workpiece. Press the trigger and pause at the
edge unl the cung arc has completely cut through the material being cut.
When pierce cung, start the pierce just o the cung line in the area of unwanted metal. Angle the torch slightly to direct blowback
molten material away from the torch p (which will greatly extends p life). Once the arc pierces the metal, return the torch to the
perpendicular posion and start moving the torch.
When possible, pull the torch toward you rather than pushing it away from you. On thicker materials it is common to lt the torch back (away
from the cung direcon) about 5°-10° to help minimize dross build up.
When you are cung at the correct speed, the plasma arc under the workpiece should trail the torch at a 5°-10° degree angle. An arc that trails
straight up and down can indicate that your travel speed is too slow, which can produce a cut that is wider than desired, along with an increase
amount of excess dross. An arc with a shallow trail indicates you’re moving too quickly and most likely you will not be severing the metal cleanly.
For straight line cung, use a non-metallic straight edge. Using a piece of mild steel for example as a straight edge can pull the arc towards it
oering a poor cut quality or possibly causing double arcing. A roller guide can prevent this.
Plasma Cung Tips and Techniques
Wilkinson Star Technical